Genus Oligoptycherhynchus Sartenaer, 1970

Type species: Terebratula hexatoma Schnur, 1851 .

Stratigraphic distribution: Lower Emsian to upper Eifelian (upper Lower to lower Middle Devonian). Geographic distribution: Europe, Morocco, Canada.

Oligoptycherhynchus hexatomus (Schnur, 1851)

Locality: Stadtfeld, Eifel region, Germany

Stratigraphy: Stadtfeld beds, Lower Emsian, upper Lower Devonian MIN 0001784.1-4

Oligoptycherhynchus hexatomus (Schnur, 1851) Locality: Stadtfeld, Eifel region, Germany

Stratigraphy: Stadtfeld beds, Lower Emsian, upper Lower Devonian Oligoptycherhynchus hexatomus (Schnur, 1851)

Locality: Vallendar, Koblenz, Middle Rhine area, Germany Stratigraphy: Lower Emsian, upper Lower Devonian

Locality: Daleiden, Eifel region, Germany

Stratigraphy: Wiltz beds, lower Upper Emsian, upper Lower Devonian MIN 0001411.1-2

Oligoptycherhynchus daleidensis (Roemer, 1844)

Locality: Rhens, Koblenz, Middle Rhine area, Germany Stratigraphy: Emsquarzit Formation, lower Upper Emsian, upper Lower Devonian MIN 0001625

Oligoptycherhynchus daleidensis (Roemer, 1844) Locality: Laubach, Koblenz, Middle Rhine area, Germany Stratigraphy: Upper Emsian, upper Lower Devonian